SimpleSprite - A small class designed to emulate the sf::Sprite functionality, and to extend it by adding the ability to set Size directly via a setSize(..) method, and the ability to set per-vertex colors via setVertexColor(int index, sf::Color color)
[C++] F.I.R.E.D.: 2D cross-platform game with elements of Action, RPG and Adventure.
[C++] Re:creation: top-down action RPG inspired by The Legend of Zelda: A Link to the Past. You play as undead knight who can turn into a ghost and control dead enemies with it to get their abilities and solve various puzzles.
[C++] Kronos: An Action-RPG game with lots of combats, customization and puzzle interaction. With 30+ map areas, 50+ enemies and bosses, and tons of items to customize your play style.
[C#] Pax: A Wargame: A grand strategy game around the topics of war, diplomacy, exploration and trade, set during the Middle Ages and Renaissance. In early development, C#-coded, Python-scriptable.
[C++11] Kroniax: a sidescroller, steer the ship without touching the walls
[C++11] Open Hexagon (GitHub): C++11 open source clone of "Super Hexagon". Features JSON/LUA customizable game files, a soundtrack by BOSSFIGHT, pseudo-3D effects.
[C++11] operation bloodshed: arcade game, spiritual successor to "Operation Carnage" - similar to Smash TV or Robotron
[C++] M.A.R.S. - a ridiculous shooter (GitHub): is a 2D space shooter with awesome visual effects and attractive physics. Players can battle each other or computer controlled enemies in exciting game modes.